The antenna is more important than whether you use 5 volts or 12 volts to supply the transmitter. Use a 17 cm piece of straight wire (vertical) on both the transmitter and receiver and you will get vastly improved range.
The antenna is more important than whether you use 5 volts or 12 volts to supply the transmitter. Use a 17 cm piece of straight wire (vertical) on both the transmitter and receiver and you will get vastly improved range.